March weather forecast
Saint Peters, MO

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Weather in March

The weather in March sees the commencement of warmer weather patterns for Saint Peters, Missouri. Increased daylight and rising temperatures herald the onset of spring. This month is associated with the highest rise in average daily temperature, from 37.4°F (3°C) to 54.1°F (12.3°C), signifying the transition from winter to spring. The likelihood of experiencing snow decreases while rainfall becomes more prevalent. The warming trends of March often continue into April, solidifying the arrival of spring.

Temperature

With the arrival of March, the average high-temperature transitions from a cold 42.1°F (5.6°C) in February to a cool 54.1°F (12.3°C). Throughout March, a steady low-temperature average of 37.9°F (3.3°C) is noted.

Humidity

In March, the average relative humidity is 75%.

Rainfall

In Saint Peters, in March, during 11.8 rainfall days, 1.5" (38mm) of precipitation is typically accumulated. Throughout the year, there are 133.4 rainfall days, and 20.98" (533mm) of precipitation is accumulated.

Snowfall

January through March, November and December are months with snowfall. March is the last month it regularly snows. During 1.9 snowfall days, in March, Saint Peters aggregates 0.59" (15mm) of snow. Throughout the year, there are 19.4 snowfall days, and 4.92" (125mm) of snow is accumulated.

Daylight

The average length of the day in March is 11h and 59min.
On the first day of March in Saint Peters, sunrise is at 6:33 am and sunset at 5:55 pm CST. On the last day of the month, sunrise is at 6:47 am and sunset at 7:25 pm CDT.
Note: On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from CST to CDT. Daylight Saving Time lasts until Sunday, November 3. 2024, at 2:00 am; consequently, the time zone reverts from CDT to CST.

Sunshine

The average sunshine in March is 6.6h.

UV index

In March, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: A daily maximum UV index of 4 in March translates into the following instructions:
Put precautions into practice - Guidance to elude sunburn is provided. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.
Updated: Aug 16, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are March temperatures?

In March, the average high-temperature and low-temperature are 54.1°F (12.3°C) and 37.9°F (3.3°C) respectively.

What is the average humidity in March?

In Saint Peters, the average relative humidity in March is 75%.

How much does it rain in March?

In Saint Peters, in March, it is raining for 11.8 days, with typically 1.5" (38mm) of accumulated precipitation.

What is the last month it snows?

March is the last month it regularly snows. During 1.9 snowfall days, in March, Saint Peters aggregates 0.59" (15mm) of snow.

How many hours of daylight does Saint Peters have in March?

In March, the average day length in Saint Peters is 11h and 59min.

When is the sunrise / sunset in March?

In March, on the first day of the month, sunrise is at 6:33 am and sunset at 5:55 pm CST. On the last day of the month, sunrise is at 6:47 am and sunset at 7:25 pm CDT.

When does Daylight Saving Time (DST) start in March in Saint Peters?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from CST to CDT. DST ends Sunday, November 3. 2024, at 2:00 am.

How long on average sun shines in March?

The average sunshine duration in March is 6.6h.

How high is the UV index in March?

In March, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a moderate health threat from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in March
Saint Peters, MO

Average temperature in March - Saint Peters, MO
  • Average high temperature in March: 54.1°F

The warmest month (with the highest average high temperature) is July (87.1°F).
The month with the lowest average high temperature is January (37.4°F).

  • Average low temperature in March: 37.9°F

The month with the highest average low temperature is July (68.4°F).
The coldest month (with the lowest average low temperature) is January (23.9°F).

Average pressure in March
Saint Peters, MO

Average pressure in March - Saint Peters, MO
  • Average pressure in March: 30.07"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

Average wind speed in March
Saint Peters, MO

Average wind speed in March - Saint Peters, MO
  • Average wind speed in March: 8.8mph

The windiest month (with the highest average wind speed) is January (9.1mph).
The calmest month (with the lowest average wind speed) is July (5.5mph).

Average humidity in March
Saint Peters, MO

Average humidity in March - Saint Peters, MO
  • Average humidity in March: 75%

The month with the highest relative humidity is May (78%).
The month with the lowest relative humidity is October (71%).

Average rainfall in March
Saint Peters, MO

Average rainfall in March - Saint Peters, MO
  • Average rainfall in March: 1.5"

The wettest month (with the highest rainfall) is April (2.48").
The driest month (with the least rainfall) is February (1.06").

Average rainfall days in March
Saint Peters, MO

Average rainfall days in March - Saint Peters, MO
  • Average rainfall days in March: 11.8 days

The month with the highest number of rainy days is May (15.6 days).
The month with the least rainy days is February (6.7 days).

Average snowfall in March
Saint Peters, MO

Average snowfall in March - Saint Peters, MO
  • Average snowfall in March: 0.59"

The month with the highest snowfall is February (1.65").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in March
Saint Peters, MO

Average snowfall days in March - Saint Peters, MO
  • Average snowfall days in March: 1.9 days

The months with the highest number of snowfall days are January and February (5.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight in March /
Average sunshine in March
Saint Peters, MO

Average daylight in March / Average sunshine in March - Saint Peters, MO
  • Average daylight in March: 12h and 0min

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in March: 6h and 4min

The months with the most sunshine are June and July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 42min).

Average sunshine days in March
Saint Peters, MO

Average sunshine days in March - Saint Peters, MO
  • Average sunshine days in March: 16.2 days

The month with the most sunshine days is January (20.4 days).
The month with the least sunshine days is July (12.7 days).

Average UV index in March
Saint Peters, MO

Average UV index in March - Saint Peters, MO
  • Average UV index in March: 4

The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

Average cloud cover in March
Saint Peters, MO

Average cloud cover in March - Saint Peters, MO
  • Average cloud cover in March: 46

The month with the most cloud cover is January (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 27).

Average visibility in March
Saint Peters, MO

Average visibility in March - Saint Peters, MO
  • Average visibility in March: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

Saint Peters, Missouri, USA

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